Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:08:08 2013 Optimize a model with 93216 rows, 92256 columns and 368736 nonzeros Presolve removed 5046 rows and 0 columns Presolve time: 0.66s Presolved: 88170 rows, 92256 columns, 358644 nonzeros Variable types: 92160 continuous, 96 integer (96 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 17923 1.0792598e+05 3.376430e+04 0.000000e+00 5s 20161 1.0896400e+05 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.089640e+05, 20161 iterations, 6.80 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 108963.999 0 3 - 108963.999 - - 7s H 0 0 116633.00000 108963.999 6.58% - 8s 0 0 108965.921 0 5 116633.000 108965.921 6.57% - 9s 0 0 108966.028 0 5 116633.000 108966.028 6.57% - 9s H 0 0 114790.77168 108966.028 5.07% - 13s H 0 0 111988.32117 108966.028 2.70% - 13s H 0 0 111430.00000 108966.028 2.21% - 14s 0 2 108968.475 0 5 111430.000 108968.475 2.21% - 16s 7 9 110370.594 6 2 111430.000 109103.042 2.09% 411 20s H 8 8 109529.00000 109103.042 0.39% 360 20s H 23 7 109408.20000 109153.151 0.23% 204 22s H 26 9 109398.22222 109153.151 0.22% 190 22s H 28 8 109358.00000 109153.151 0.19% 177 22s Cutting planes: Gomory: 2 Flow cover: 5 Explored 51 nodes (26586 simplex iterations) in 24.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.093580000000e+05, best bound 1.093552467532e+05, gap 0.0025%